Disable Input System when game is not focus

Hello guys,

I have maybe a stupid question but i want to disable the input system when I have not the focus on my game. I saw that since the 0.2.8-preview the option `InputSettings.runInBackground` was removed but I do not find any way to disable it without using the https://docs.unity3d.com/ScriptReference/MonoBehaviour.OnApplicationFocus.html system...